Improvement in steam-heaters



5 the same.

i luoAu` Bowan, or COLUMBUS, onto.

Speciiicationforming part of Letters iPatent No. 115,423, dated May 30, 1871.

` LNOAHBOWEN, of Columbus, in the county of Franklin and State of Ohio, have invented certain newand usefullmprovements in Steamj, Heating Apparatus, of 'which the -following is a specification: c i

`My inventionrelates `to apparatus for heatof temperature and prevent leakage ;y second,

j in mountingthe heating apparatus upon rollers so asto move upon a track, and-thus ali-ord j facilityfor accommodating itself automatically to the expansion and contraction occa- L sionedby changes in temperature, thus prel venting the breaking ofthe connections with the steam-gen erator, leakage from loose joints, rendering expansion-joints unnecessary, and

c `facilitatingthe removal of the apparatus for repairs'or otherwise; third, inuniting the sev- "eral heating-sections together so as to adjust j ftheir ball -joint connections and render their separation easy and convenient; `fourth, in

providing one -or more sections with a separate pipe, which extends into a hot-air line in the wall and returns and communicates with the adjacent section,for the purpose of increasing thedraft of said ue and facilitating the c heating ofthe nest of sections; and in the construction of the adjustable tube-valvefor moistening the air with steam, and for letting the air out the sections 'when heating the apparatus. .j j j In the accompanyingdrawin g, Figure l represents an elevationof aheating apparatus embracing my invention. Fig. 2 represents a j top Aview of a nest of heating sections bolted 3 together. ]3`ig.3`represents a vertical crosssection through the ball-joint connections of tion of one of the sections, showing the steam and air valve as `applied thereto; and Fig; 5

tion and elevation, full size.

.i The heating apparatus consists of two or represents the adjustable steam-valve in sec- Fig. 4 represents a horizontal sec-4 eachother by means of hollow ball-joints C,

arranged in any convenient position. The ball-joints G are ground and fitted in openings in the adjacent sides of the sections, so

y as to accommodate themselves to the expansion and contraction ofthe sections A, and

maintain a tight and durable joint without4 packing. Hollow projecting ribs D are cast on each"side of these sections of such form as will admit of matching the one within the other,so as4 to bring the sections close together,'afford a larger steam-chamber, and increase thelhollowV radiating surfacein such proportion `that five sections with hollow ribs will giveout as much heat as seven sections with solidribs. In the example shown these `hollow ribs f are of double Cymen-reversa. form, having a V-shaped cross-section, and extend either vertically or hoizontally the height 0r i length of the heating amber. The heatingsections thus constructed are securedtogether by three bolts, E, passing through flanges or projections F on the two outside sections, and having such relation to the ball-joints C as to `lorin g and hold them to a trueV bearing-that is to say, the top bolt E is arranged vertically over the ball-joints, and the two lower ones on the opposite sides thereof, so as to form the igure of a triangle, within the adjusting points of which the balljoints C are embraced, as shown in Fig. l. The intermediate section or sections are supported vertically upon and by the ball-joints (l, and held in position endwise by their hollow ribs D interlacing with those of the adjacent sections, as represented in Figs. 2 and 3 ofthe drawing. The outside heating- Vsections are supported upon rollers L, or a carbranch pipe G will draw the apparatusback from the iiueconnections, and thus utilize the force created by the heat and cold to render the apparatus self-adjusting upon its yielding supports. Moreover, the rollers afford facility for moving the apparatus for repairs or other purpose. The steam is introduced into one of the outside sections by a branch-pipe connection at Gr, and passes out bya similar branchpipe connection at H, of the other outside section, as shown in Figs. l and 2, the inlet-branch pipe Gr connecting with the main steam supply-pipe P in any convenient manner. A separate pipe, instead of entering the section A directly from the main pipe of the steam-generator, may pass up into the hot-air lue in the wall a short distance and return, and then enter one of the sections at I for the purpose of increasing the draft of said flue by the heat which the pipe gives out, and also heating the nest of sections much quicker, by reason of increasing the volume of hot steam therein, by the separate pipe. One or more of the heating-sections may be provided with an adjustable tube-valve, for letting out steam for moistening the dry air and bringing it to a healthy temperature. "f

The cyma-iefvcisa. form of the ribs D is very advantageous in arresting the ascent of the heated air so as to retard its passage up between the ribs by causing it to impinge upon and against the opposite bends or curved sides D2 of each rib D, and thereby greatly facilitate the heating of the air between the several sections without the intervention ofdi'vision-plates for that purpose. This-alve consists of a tube, a, screwed into the steam-ch amber, and a tubular screw-cap, b, on its outer end. The inner tube a has a stem, c, with a conical valve, d, on its inner end, and an adjustable plate or stop, e, on its outer end; and the screw-cap b has a small central exit-tube, f, the inner end of which strikes against the end of the stem a when the cap is screwed up, and thus opens the conical valve and allows the steam and air to escape. The escape of steam and air can be regulated by adjusting the stop-plate e so as to admit of a greater or lesser motion of the conical valve. By unscrewing the cap b the conical valve d will be closed by the pressure of the steam in the heater, and by screwing up the cap b the valve d is opened the desired degree, and held in such position by the contact of the cap-tube f with the valve-stem c, as shown in Fig. 5 of the drawing.

Having described my invention, l claim- 1. The hollow sections A of aheating apparatus united so as to communicate with each other by means of balljoints O, for the purpose described.

2. The middle heating section or sections A supported endwise by the intermatching hollow ribs D of the outside sections, and vertically by and upon the communicating balljoints, thus dispensing with fastenings for the middle sections, as described.

3. The pipe I, when arranged to enter the section A after having irst passed directly from the boiler-pipe into the hot-air flue, for the purpose of increasing the draft by increasing the heat of said flue, and also heating the nest of sections quicker, as described.

4; The several sectionsA oi' the heating apparatus secured together by means of bolts E, arranged in a triangular form so as to embrace within their bearings the hollow globejoints C, and their communicating tube-connections to equalize the adjustment of the joints, as described.

5. To compensate for the expansion and contraction 'of the heating apparatus under varying tempera-tures of heat and cold, mounting the two outside sections upon rollers fitted to move upon a track, and thus prevent the breaking of the joints of the steam-pipes connecting the apparatus with the generator, asv

described.

6. The valve d, with its adjustable stop-plate c and tubular screw-cap b, as applied vto one or more sections of a steam-heatin g apparatus, as described.

7. The combination of the heating-sections A, the intermatching hollow ribs D, the ballcommunicating and'sustaining joints O, the

connecting-rods E, the induction and exhaust pipes G and H, and the regulating escapevalves, the several part-s being constructed and arranged as and for the purpose described.

. NOAH BOWEN.

Witnesses:

R. H. GARDNER, WM. JAMIsoN. 

